KR102503529B1 - Air cleaning and ventilating system using liquid moisture controlling agent - Google Patents

Abstract

The present invention provides a clean ventilation device in which supply/exhaust air is not mixed while utilizing the characteristics of a liquid desiccant. In one embodiment, an indoor air supply unit, an indoor exhaust unit, an outdoor air supply unit, an outdoor exhaust unit, and A clean ventilation apparatus including a fan disposed on an air flow path from a base and an outdoor exhaust unit, comprising: a first gas-liquid contact cell unit disposed on an air flow path flowing from the indoor exhaust unit to the outdoor exhaust unit; a second gas-liquid contact cell unit disposed on an air flow path flowing from the outdoor air supply unit to the indoor air supply unit; and a liquid passage connecting the first gas-liquid contact cell part and the second gas-liquid contact cell part, wherein the first gas-liquid contact cell part and the second gas-liquid contact cell part contain a liquid moisture controller contacting air passing therethrough. Provided is a clean ventilation device using a liquid humidifier.

Description

Air cleaning and ventilating system using liquid moisture controlling agent}

The present invention relates to a clean ventilation device using a liquid humidifier, and relates to a clean ventilation device including a gas-liquid contact cell in which air flow passing through the clean ventilation device and a liquid humidifier come into contact.

1 is a schematic diagram of a conventional clean ventilation device. 1(a) discloses a clean ventilation device 1 including an indoor exhaust unit 11, an outdoor exhaust unit 21, an indoor air supply unit 12, and an indoor exhaust unit 22, and the clean ventilation The device 1 includes a dehumidifying rotor 40 disposed across the exhaust side air flow and the supply side air flow, a filter 50 disposed behind the dehumidifying rotor in the supply side air flow, and a fan 31 forming each air flow. , 32).

1(b) discloses a clean ventilation device 1 including an indoor exhaust unit 11, an outdoor exhaust unit 21, an indoor air supply unit 12, and an indoor exhaust unit 22, and the clean ventilation In the device 1, the exhaust side air flow and the supply side air flow cross each other in the total heat exchanger 41, and the filter 50 disposed at the rear of the total heat exchanger 41 and the fans 31 and 32 forming each air flow ).

In the case of the dehumidifying rotor type as shown in FIG. 1 (a), it is difficult to downsize as a large facility, and there is a limit to efficiency because high-temperature regeneration heat consumed for regeneration is required, and only dehumidification is possible, so there is a limit to the total heat exchanger. Since it is difficult to completely separate the supply air and the regeneration side, part of the supply air and exhaust air are mixed, and there is a problem in that performance as a heat exchanger, contamination of the fresh air due to functional cross-contamination, and periodic replacement is required due to deterioration in the performance of the dehumidifying rotor.

In the case of FIG. 1 (b), the mechanical strength is good in the case of the total heat exchanger and the life span is short, and the propagation of pathogens such as mold and bacteria caused by moisture in the total heat exchanger and condensation due to the large temperature difference between indoors and outdoors in winter and sub-zero outdoor air There is a problem such as freezing of moisture, so there is a limit to its use. Moisture movement of heat exchange materials such as paper used for material exchange of moisture and air leak together make it difficult to completely separate the treatment side and the regeneration side. Supply and exhaust are partially mixed, and performance and function as a heat exchanger are new due to cross-contamination. There is a problem that periodic replacement is required due to contamination of the outboard motor and performance degradation of the dehumidifying rotor.

The present invention is to solve these problems of the prior art, and an object of the present invention is to provide a clean ventilation device in which supply air/exhaust air is not mixed while utilizing the characteristics of a liquid humidifier.

In order to achieve the above object, the present invention provides an indoor air supply unit, an indoor exhaust unit, an outdoor air supply unit, an outdoor exhaust unit, and a fan disposed on an air flow path to the indoor air supply unit and the outdoor exhaust unit. A clean ventilation device comprising: a first gas-liquid contact cell unit disposed on an air flow path flowing from the indoor exhaust unit to the outdoor exhaust unit; a second gas-liquid contact cell unit disposed on an air flow path flowing from the outdoor air supply unit to the indoor air supply unit; and a liquid passage connecting the first gas-liquid contact cell part and the second gas-liquid contact cell part, wherein the first gas-liquid contact cell part and the second gas-liquid contact cell part contain a liquid moisture controller contacting air passing therethrough. Provided is a clean ventilation device using a liquid humidifier.

In one embodiment of the present invention, the first and second gas-liquid contact cell units include a gas-liquid contact structure disposed on an air flow path; and a liquid tank disposed below the gas-liquid contact structure. The liquid passage may be connected to the liquid tank, and a pump may be disposed on the liquid passage.

In one embodiment of the present invention, the first and second gas-liquid contact cell parts include a supply jacket to which the liquid passing through the pump is supplied, and the gas-liquid contact structure allows the liquid to move by at least the weight of the liquid. It has a structure extending in the vertical direction, and the gas-liquid contact structure may have a length extending to the inside of the liquid tank.

In one embodiment, dampers disposed in the outdoor exhaust unit and the outdoor air supply unit; and an internal damper for controlling an internal air flow such that the air introduced into the indoor exhaust unit is discharged to the indoor air supply unit after passing through the first gas-liquid contact cell unit or the second gas-liquid contact cell unit.

In one embodiment, dampers disposed in the outdoor exhaust unit and the outdoor air supply unit; a water level sensor disposed in the liquid tank; and a water supply unit connected to the liquid tank, and may further include a control unit connected to the water supply unit, the water level sensor, the damper, the fan, and the pump.

In one embodiment, the first and second gas-liquid contact cell parts include a supply jacket to which the liquid passing through the pump is supplied, and the gas-liquid contact structure moves the liquid vertically by at least the weight of the liquid. It has an extended structure, and the controller may control the water supply unit so that the lower portion of the gas-liquid contact structure is submerged in the liquid desiccant stored in the liquid tank.

In one embodiment, the pump may include a first pump disposed on a liquid passage connecting a liquid tank of the first gas-liquid contact cell part and a supply part of the second gas-liquid contact cell part, and a liquid tank of the second gas-liquid contact cell part and the liquid tank of the second gas-liquid contact cell part. A second pump disposed on the liquid passage connecting the supply unit of the first gas-liquid contact cell unit may be included.

In one embodiment, the gas-liquid contact cell unit is connected to the liquid supply pipe of the liquid supply line and includes a supply jacket disposed on an upper side; a filter pad disposed on a lower surface of the supply jacket; and a gas-liquid contact structure connected to the filter pad, wherein the gas-liquid contact structure includes micropores through which the liquid that has passed through the filter pad passes, and the filter pad and the gas-liquid contact structure are formed by capillary action and membrane permeation. As a result, the liquid film may be formed on the surface of the gas-liquid contact structure.

In one embodiment, the liquid desiccant may include LiCl, and a temperature controller may be disposed on the liquid tank or the liquid passage.

The present invention can provide a clean ventilation device in which air supply/exhaust air is not mixed while utilizing the characteristics of a liquid type humidifier through the above configuration.

1 is a schematic diagram of a conventional clean ventilation device.
2 is a schematic diagram of a clean ventilation device according to an embodiment of the present invention.
3 and 4 are schematic side views of the clean ventilation device of FIG. 2 .
5 is a schematic perspective view of a gas-liquid contact cell unit according to an embodiment of the present invention.
Fig. 6 is a schematic view of the gas-liquid contact cell portion of Fig. 5;
7 is a photograph in which a jacket is removed from a gas-liquid contact cell unit according to an embodiment of the present invention.
8 is a schematic perspective view of a gas-liquid contact cell unit according to another embodiment of the present invention.
9 is a schematic diagram of a clean ventilation device according to another embodiment of the present invention.

Hereinafter, preferred embodiments will be described in detail so that those skilled in the art can easily practice the present invention with reference to the accompanying drawings. However, in describing a preferred embodiment of the present invention in detail, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and actions. In addition, in this specification, terms such as 'upper', 'upper', 'upper surface', 'lower', 'lower', 'lower surface', and 'side surface' are based on the drawings, and are actually elements or components may vary depending on the direction in which is placed.

In addition, throughout the specification, when a part is said to be 'connected' to another part, this is not only the case where it is 'directly connected', but also the case where it is 'indirectly connected' with another element in between. include In addition, 'including' a certain component means that other components may be further included, rather than excluding other components unless otherwise stated.

2 to 4 are schematic diagrams of a clean ventilation device using a liquid desiccant according to the present invention. Specifically, FIG. 2 is a schematic plan view of the clean ventilation device, FIG. 3 is a side schematic diagram of the clean ventilation device, and operation in the ventilation mode is shown, and FIG. 4 is a side schematic diagram of the clean ventilation device. The operation is shown in the clean mode. .

As shown in FIGS. 2 to 4, the clean ventilation device 1 using the liquid desiccant according to an embodiment of the present invention includes an indoor exhaust unit 11 connected to the room, an indoor air supply unit 12 connected to the outside, and It includes an outdoor exhaust unit 21 and an outdoor exhaust unit 22, and an exhaust fan 31 is disposed adjacent to the outdoor exhaust unit 21 between the indoor exhaust unit 11 and the outdoor exhaust unit 21. The air supply fan 32 is disposed adjacent to the indoor air supply unit 12 between the outdoor air supply unit 22 and the indoor air supply unit 12 . When the exhaust fan 31 is operated, indoor air is discharged to the outside through the indoor exhaust unit 11 and the outdoor exhaust unit 21, and when the air supply fan 32 is operated, the outdoor air supply unit 22 and the indoor air supply unit Outside air is supplied to the room through (12). In this air flow, the air flow introduced into the room and the air flow discharged to the outdoors may not be mixed with each other by the inner wall 10a of the case 10 .

As shown in FIG. 2, the clean ventilation device 1 has a gas-liquid contact cell unit disposed between the indoor exhaust unit 11 and the exhaust fan 31 and between the outdoor air supply unit 22 and the air supply fan 32 ( 100). The gas-liquid contact cell unit 100 disposed on the inlet side and the gas-liquid contact cell unit 100 disposed on the outlet side have the same or similar structures, and a pump 150 is used to supply liquid to the gas-liquid contact cell unit 100 on the inlet and outlet sides. ) is connected to each gas-liquid contact cell unit 100. The gas-liquid contact cell unit 100 disposed on the outlet side may be referred to as a first gas-liquid contact cell unit 100, and the gas-liquid contact cell unit 100 disposed on the inlet side may be referred to as a second gas-liquid contact cell unit 100.

The airflow flowing into the room and the liquid in contact with the inlet-side gas-liquid contact cell 100 are supplied to the outlet-side gas-liquid contact cell 100 that contacts the airflow discharged to the outdoors through the pump 150, and is discharged to the outdoors. The air flow and the liquid in contact with the outlet gas-liquid contact cell 100 are supplied to the inlet gas-liquid contact cell 100 through the pump 150 . Here, the liquid includes a liquid humidity control agent, and may be, for example, an aqueous solution containing LiCl at a predetermined concentration. The temperature and humidity of the discharged air contacting the liquid humidifier with the gas-liquid contact cell 100 are controlled, and at the same time, it exchanges heat with the liquid. It regulates temperature and humidity and exchanges heat.

3 and 4 will be described with reference to schematic side views of the clean ventilation device 1 according to an embodiment of the present invention.

The gas-liquid contact cell unit 100 is provided on the inlet side and the outlet side, respectively, and the liquid in contact with the inflowing air is supplied to the outlet side and the liquid in contact with the outflow air is supplied to the inlet side and circulated. The gas-liquid contact cell unit 100 is located on the upper side and includes a supply jacket 110 into which liquid supplied from the liquid tank on the opposite side flows; a filter pad 120 disposed on the lower surface of the supply jacket 110 to constantly discharge the liquid supplied to the supply jacket 110; a gas-liquid contact structure 130 connected to the filter pad 120; and a liquid tank 140 in which the liquid passing through the gas-liquid contact structure 130 is collected.

The upper and side surfaces of the supply jacket 110 are structured so that the liquid cannot pass through so that the liquid flowing therein constantly flows out to the gas-liquid contact structure 130 disposed at the lower portion in a state where it stays, and the lower surface of the filter pad 120 ) is placed. The filter pad 120 is made of a material through which liquid can pass in a capillary or membrane permeable manner. The gas-liquid contact structure 130 includes micropores through which the liquid passing through the filter pad 120 passes, and the liquid film is formed on the surface of the gas-liquid contact structure 130 . The lower part 131 of the gas-liquid contact structure 130 extends to the inside of the liquid tank 140 so as to be submerged in the liquid of the liquid tank 140 .

The liquid tank 140 is connected to the liquid passage, the water supply unit WS, and the pump 150. The water supply unit WS is connected to the water pipe or the water tank and allows the concentration of the liquid desiccant to be adjusted, and the pump 150 ) supplies the liquid collected in the liquid tank 140 to the opposite supply jacket 110. Since each gas-liquid contact cell unit 100 is arranged at the same height, the liquid tank 140 is located at a lower position than the supply jacket 110 on the opposite side, so that the liquid in the liquid tank 140 is supplied to the supply jacket 110 on the opposite side. To do this, the pump 150 is essential. In the embodiment of the present invention, pumps 150 are connected to each liquid tank 140, but only one pump 150 may be disposed when the height of the gas-liquid contact cell unit 100 is different.

The liquid tank 140 may include a porous medium made of a material that floats on the liquid because its specific gravity is lighter than that of the liquid, such as a sponge, and the porous medium prevents the formation of droplets in the tank by preventing the flow inside the liquid tank 140. It can be done, and additional droplet formation due to droplets from the gas-liquid contact mechanism 130 is prevented.

In the outflow-side air flow, the indoor exhaust unit 11 has a structure that allows indoor air to flow into the clean ventilation device 1, and along the air flow introduced into the indoor exhaust unit 11, the vessel 11a and the vessel A rectifying part 11b arranged successively behind 11a is included. The indoor exhaust unit 11 is connected to the room, but is not limited to being directly connected, and may be supplied to the device after passing through another structure. The vane 11a has a structure in which the cross-sectional area expands along the air flow direction and is used to control diffraction or speed of air, but may be omitted if air diffraction or speed can be controlled by another structure. The rectifying unit 11b is disposed in front of the gas-liquid contact cell unit 100 and rectifies the vortex of air supplied to the gas-liquid contact cell unit 100 with a constant speed and distribution. The structure of the rectifying part 11b may be composed of pins or lattices arranged at regular intervals, and the rectifying part 11b allows air to have a constant flow without forming turbulence in the gas-liquid contact cell part 100 without loss of static pressure. Accordingly, formation of droplets from the liquid film of the gas-liquid contact structure 130 while passing through the gas-liquid contact cell unit 100 can be suppressed.

The outdoor exhaust unit 21 is disposed behind the exhaust fan 31 and has a damper 21a therein to prevent external air from flowing in through the outdoor exhaust unit 21 when the exhaust fan 31 is not operating. prevent.

In the air flow on the inlet side, the outdoor air supply unit 22 has a structure that allows outside air to flow into the clean ventilation device 1, and outside air flows in through the outdoor air supply unit 22 when the air supply fan 31 is not operating. It includes a damper 22a preventing the air from being discharged, a vane 22b and a rectifier 22c sequentially disposed along the air flow introduced into the outdoor air supply unit 22 similarly to the indoor exhaust unit 11. The outdoor air supply unit 22 is connected to the outside, but is not limited to being directly connected, and may be connected to be supplied to the device after passing through another structure. The vane 22b has a structure in which the cross-sectional area expands along the air flow direction and is used to control the speed of air, but it can be omitted if air diffraction or speed can be controlled by another structure. The rectifying unit 22c is disposed in front of the gas-liquid contact cell unit 100 and rectifies air supplied to the gas-liquid contact cell unit 100 with a constant speed and distribution. The structure of the rectifying unit 22c may be composed of pins or grids arranged at regular intervals, and the rectifying unit 22c allows air to have a constant flow without forming turbulence in the gas-liquid contact cell unit 100 without loss of static pressure. Accordingly, formation of droplets from the liquid film of the gas-liquid contact structure 130 while passing through the gas-liquid contact cell unit 100 can be suppressed.

As shown in FIGS. 3 and 4, the clean ventilation device 1 is disposed between the exhaust fan 31 and the gas-liquid contact cell unit 100 and between the gas-liquid contact cell unit 100 and the air supply fan 32, respectively Internal dampers (61, 62) and dampers (21a, 22a) disposed in the outdoor exhaust unit 21 and the outdoor air supply unit 22, respectively, in a state in which the air flow with the outside is blocked (dampers 21a and 22a are closed) , It is also possible to open the internal dampers 61 and 62 to form an air flow so that indoor air circulates through the clean ventilation device 1. In the case of the internal dampers 61 and 62, positions other than those shown in FIGS. 3 and 4, for example, between the gas-liquid contact cell unit 100 and the indoor exhaust unit 11 and in gas-liquid contact with the outdoor air supply unit 22 It may be changed to various positions such as between the cell parts 100, but it is configured to contact the gas-liquid contact cell part 100 at least once in the clean air flow.

On the other hand, the clean ventilation device 1 includes a control unit 200, and the control unit 200 is connected to various sensors and driving members including IAQ (Indoor Air Quality) such as CO2, VOCs, and fine dust, and is connected to the driving member of the present invention. The clean ventilation device 1 according to the embodiment is controlled to operate normally. Here, the connection does not mean only a direct connection, but also includes a connection through wireless communication or an indirect connection through a server. A plurality of sensors may be provided in the clean ventilation device 1 . As shown in FIGS. 3 and 4, the clean ventilation device 1 includes pressure sensors 71 and 72 disposed in front and rear of the gas-liquid contact cell unit 100, and the water level of the liquid tank 140 inside the liquid tank 140. A water level detection sensor 141 disposed to measure , and a flow sensor 151 disposed in front or rear of the pump 150 to measure the flow rate or flow rate of liquid passing through.

The controller 200 can automatically operate the clean ventilation device 1, and controls the mode, air volume, humidity, and temperature, the CO ₂ sensor disposed indoors, and fine dust. It is possible to consider the priority of each measured value by receiving information from sensors such as IAQ.

The controller 200 is connected to the pressure sensors 71 and 72, the water level sensor 141, and the flow sensor 151, and also includes the air supply/exhaust fans 31 and 32, the pump 150, and the damper ( 21a, 22a) and the internal dampers 61 and 62 are connected to control the operation of the clean ventilation device 1.

The control unit 200 measures the pressure loss in the gas-liquid contact cell unit 100 through the pressure sensors 71 and 72 and adjusts the supplied wind speed. The controller 200 may control the fans 31 and 32 based on the measured values of the pressure sensors 71 and 72 .

In particular, the control unit 200 is connected to the pressure sensors 71 and 72, the flow rate sensor 151, the pump 150, and the fans 31 and 32 to maintain a constant liquid film in the gas-liquid contact cell unit 100, Adjust the gas/liquid supply ratio so that droplets are not issued. The liquid/gas ratio and liquid-gas ratio (sol (kg/h)/ air (kg/h)) for optimizing the contact action between liquid and gas can be set differently depending on the type of gas and liquid within 0.7 to 1.5. can The control unit 200 sets a target value according to the type of gas and liquid in the liquid-to-liquid ratio within the above range, and adjusts the liquid supply amount and the gas supply amount accordingly. At this time, follow-up control is performed while checking whether supply is properly performed through the sensor.

The control unit 200 controls the fans 31 and 32 so that the wind speed in the gas-liquid contact cell unit 100 is in the range of 1.5 m/s to 2.5 m/s. The wind speed of the gas increases the contact action, but when the wind speed of the gas increases, the liquid film of the gas-liquid contact cell unit 100 may be scattered. Specifically, less than 1.5㎧ can overcome the surface tension of the liquid and cannot cause scattering, so it is advantageous for scattering, but the contact action is weak, and mass objects such as particles cannot be accelerated to collide with the liquid. Although advantageous, it is not used in the gas-liquid contact cell unit 100 because it breaks the surface equilibrium of the liquid and increases the contact angle to cause scattering.

The controller 200 may also measure the pressure loss of the gas-liquid contact structure 130 through the pressure sensors 71 and 72 . The measurement of the pressure loss is not only used for controlling the fan, but also can give a notification to the user since contamination of the gas-liquid contact cell unit 100 and imbalance of the liquid film can be predicted when the differential pressure is changed.

On the other hand, the control unit 200 allows the clean ventilation device 1 to be operated in various modes, and may automatically change the mode. In the case of the ventilation mode, the internal dampers 61 and 62 are closed, the dampers 21a and 22a are opened, and the fans 31 and 32 are driven. At this time, the heat and/or moisture of the discharged air is recovered/discharged through the gas-liquid contact cell unit 100, and the pump 150 is operated to control the heat and/or moisture of the incoming air through the gas-liquid contact cell unit 100. drive In addition, the concentration of the moisture control component in the liquid can be adjusted by adjusting the water supplied from the water supply unit WS, and the humidity of the gas passing through the gas-liquid contact cell unit 100 can be adjusted by adjusting the concentration.

On the other hand, in the clean mode, the dampers 21a and 22a are blocked while the internal dampers 61 and 62 are open, and only the air supply fan 32 is driven. At this time, the moisture of the circulated air is controlled (humidified or dehumidified) through the gas-liquid contact cell unit 100, and the pump 150 is driven so that harmful components are sterilized by the humidity control component and dust and the like are removed by the liquid. .

The clean ventilation device 1 according to an embodiment of the present invention may be operated in a positive pressure mode or a negative pressure mode in addition to the ventilation mode and the clean mode. In the case of the positive pressure/negative pressure mode, the operation is basically the same as that of the ventilation mode. The control unit 200 receives a signal from the pressure sensor 71 disposed in front of each gas-liquid contact cell unit 100, and the air supply/exhaust fans 31 and 32 ), it is possible to implement a pressure difference between indoor and outdoor by adjusting the rotation speed differently. In the case of the positive pressure mode, the air supply/exhaust fans 31 and 32 are operated so that the pressure in the room is kept higher, and in the case of the negative pressure mode, the air supply and exhaust fans 31 and 32 are operated so that the pressure in the room is kept lower. let it

5 and 6 show the structure of the gas-liquid contact cell unit 100 used in the embodiment of the present invention.

5 and 6, in the gas-liquid contact cell unit 100, the liquid supply pipe 111 extends horizontally from the outside to the inside of the supply jacket 110, and the liquid passes through the liquid supply pipe 111 to the inside of the jacket 110. is introduced into The liquid supplied in this way flows into the gas-liquid contact structure 130 connected to the lower part by capillary action, membrane permeation, and self-weight due to the porous structure of the filter member 120 at the lower part of the jacket.

The supply jacket 110 may be provided with a shielding agent for gas shielding so that an air flow path is not formed around the supply jacket 110 so that liquid does not flow out through other paths except for the filter member 120 on the lower surface.

The gas-liquid contact structure 130 is not limited to a specific structure as long as it can maintain a constant liquid film thickness on the surface. When a certain amount of liquid is supplied to the gas-liquid contact structure 130 through the filter member 120, any structure capable of forming/maintaining a certain liquid film is applicable. At this time, the liquid film preferably has a thickness of 0.2 to 1.5 mm. The thickness of the liquid film is a material that is in direct contact with the gas to optimize the contact action on the specific surface of the gas-liquid contact cell unit 100. If the thickness is less than 0.2 mm, the liquid film thickness is too small and the amount of liquid on the surface is small, so the material is exchanged by the contact action. It is saturated in a short time and the contact efficiency is lowered, and the supply of fresh liquid is not smooth. If it exceeds 1.5mm, enough fresh liquid can be supplied smoothly, so material exchange can be facilitated and the contact action can be maximized. Since the flow rate of the liquid flowing on the surface of the gas-liquid contact cell unit using the phenomenon cannot be controlled, scattering of the liquid occurs due to a natural fall waterfall, an increase in the contact angle, and the like.

The material of the gas-liquid contact structure 130 may be paper, fiber, non-woven fabric, porous material, filter, natural material such as wood, zeolite, graphene, chemical material or tissue, and the material may have a hydrophilic surface such as carbon coating or zeolite coating. You can also do a coating. On the surface of the gas-liquid contact structure 14, a hydrophilic surface is formed by microstructure protrusions, capillaries, and pores, and since the hydrophilic microprotrusions or concavo-convex voids are filled with liquid, the equilibrium contact angle is very small, less than 60 degrees, and the gas Scattering and water droplets can be prevented.

In addition, since the end 131 of the gas-liquid contact structure 130 extends to the inside of the liquid F of the liquid tank 140, a drop due to a break in the liquid flow or an inclination, a drop due to gravity acceleration, a drop, or a waterfall phenomenon There is no scattering of bubbles or the like due to

The gas-liquid contact structure 130 extends in the vertical direction, but may also extend in a direction inclined to the vertical direction instead of the vertical direction. However, even in this case, the angle of inclination is limited to the extent to which the liquid can flow along the surface along the inclined surface.

The gas-liquid contact structure 130 is formed in a columnar shape with a porous material having a streamlined horizontal cross section. The gas-liquid contact structure 130 may be referred to as a wick. The wick tube extends in the vertical direction, and a plurality of wick tubes are arranged in a plurality of rows below the filter pad 120 . The wick tubes are arranged in a plurality of rows, and the wick tubes in adjacent rows are staggered with each other. The wick tube controls the free-falling flow of the liquid and can obtain even contact efficiency with the air flow. In this embodiment, the horizontal cross-sectional shape of the wick tube is approximately a diamond shape, but is not limited thereto, and may have an elliptical, circular, or angular shape suitable for air flow.

7 shows a photograph in which the jacket 110 is removed from the gas-liquid contact cell unit 100 according to an embodiment of the present invention. In this embodiment, the liquid supply pipe 111 extends to the inside of the supply jacket 110, and holes are formed at regular intervals inside the supply jacket 110 so that the liquid is evenly distributed over the entire area of the filter member 120. can supply A gas-liquid contact structure 130 may be disposed under the filter member 120 .

8 shows another embodiment of the gas-liquid contact cell unit 100 . In the case of FIG. 8, similar to FIG. 5, the gas-liquid contact structure 130 is formed in a columnar shape with a porous structure material having a streamlined horizontal cross section. The gas-liquid contact structure 130 may be paper, fiber, nonwoven fabric, porous material, filter, natural material such as wood, zeolite, and graphene, chemical material, or tissue, and may be referred to as a wick tube. The wick tube extends in the vertical direction, and a plurality of wick tubes are arranged in a plurality of rows below the filter pad 120 . An inner tube 131 is formed inside the wick tube, and the liquid that has passed through the filter member 120 is supplied to the inner tube 131 and flows along the inner wall of the inner tube 131 to the wick around the inner tube 131 through capillarity or voids. It moves to the surface through the absorption phenomenon and comes into contact with the air.

The operation of the clean ventilation device 1 according to the Korean seasons may be as follows.

Summer season: Cooled indoor air is introduced into the device by the exhaust fan 31, and the sensible heat of the air exchanges heat with the liquid while the air contacts the liquid sent to the gas-liquid contact cell 100 on the outlet side by the pump 150 in the device. This causes the liquid to cool. Moisture (latent heat) in the indoor air, which is lowered by cooling by an air conditioner or air conditioner disposed indoors, takes the moisture of the liquid with a low specific heat and discharges it to the outside, cooling the liquid by the heat of evaporation of the liquid. That is, the liquid that has passed through the gas-liquid contact cell unit 100 on the outflow side is cooled by sensible heat and latent heat, and moisture is evaporated to regenerate the liquid.

The high-temperature and high-humidity outside air introduced into the device through the outdoor air supply unit 22 by the air supply fan 32 is sent to the gas-liquid contact cell unit 100 at the inlet side and contacts the liquid. At this time. The liquid, which is cooled on the outflow side and whose specific gravity has increased by evaporation, contacts the high-temperature and high-humidity air introduced from the outside and exchanges sensible heat. The external air at the inlet side is dehumidified of latent heat by the low-temperature and high-concentration solution supplied from the outflow side, and the dehumidification generates heat and becomes hotter. The circulation of the liquid and air is continuous, and dehumidification, humidification, cooling, and heating are continuously performed, resulting in high-efficiency total heat exchange.

Due to the dehumidifying and humidifying characteristics of the liquid containing the desiccant, the energy in the exhaust is recovered and the total heat exchange is continuously performed to transfer the cold and dry fresh air to the supply air. That is, it maintains the equilibrium of dehumidification and humidification and maintains the equilibrium of heating and cooling within itself.

It is possible to maintain constant moisture (absolute humidity, relative humidity) throughout the year by total heat exchange and specific gravity of liquid. For example, 50% RH constant humidity throughout the year is possible with a liquid of 30 wt% LiCl. In summer, when the relative humidity is kept low by humidity control, the perceived temperature can be lowered by more than 2℃, and in addition to the total heat exchange function, it is possible to control the comfort of the human body in addition to the energy saving function to reduce the cooling energy in the entire room. .

Winter: Indoor air heated by an air conditioner or heating device enters the device by the exhaust fan 31, and while contacting the liquid sent to the gas-liquid contact cell 100 on the outflow side by the pump 150 in the device, The sensible heat of the air exchanges heat with the solution to heat the solution, and the moisture in the air, which has increased due to physical activity and air conditioning indoors, is deprived of moisture by the solution with a higher specific gravity and cooled by the outside air, and is dehumidified and discharged to the outside. At this time, the liquid is heated by the dehumidifying heat. That is, the liquid passing through the gas-liquid contact cell unit 100 on the outflow side is heated by sensible heat exchange and latent heat exchange.

The cold and dry outside air introduced into the device by the air supply fan 32 is sent to the gas-liquid contact cell unit 100 on the inlet side, and is brought into contact with the liquid. The solution, which is heated in the exhaust and whose specific gravity is lowered by dehumidification, contacts dry and cold air introduced from the outside, and the air is heated and the solution is cooled by sensible heat exchange. The dry outdoor air is humidified by the high-temperature, low-concentration solution, and the total heat exchange is performed continuously to recover the energy in the indoor exhaust and transfer the warm and humid fresh air to the supply air. Summer and winter are completely opposite movements. In winter, the sensible temperature can be raised by more than 2℃ by humidification control, so it has an energy saving function that can reduce the total indoor heating energy beyond the total heat exchanger.

Due to the dehumidification and humidification characteristics of the liquid containing the humidifier, the energy in the exhaust is recovered and hot and humid fresh air is transferred to the supply air, and total heat exchange is continuously performed. That is, it maintains the equilibrium of dehumidification and humidification and maintains the equilibrium of heating and cooling within itself.

It is possible to maintain constant moisture (absolute humidity, relative humidity) throughout the year by total heat exchange and specific gravity of the solution.

Inter-season: During the inter-season, there are many environments that require cooling and heating during the day due to the large diurnal temperature difference. placed in the environment.

The clean ventilation device according to an embodiment of the present invention controls not only total heat exchange between seasons but also appropriate humidity control with a humidity control function, so that it is possible to control latent heat without using an air conditioner and heater, so that it can control the sensible temperature between seasons of ±2 ° C or more. may not be used.

Meanwhile, when ventilation is not required, it is also possible to circulate indoor air while passing through the gas-liquid contact cell unit 100 by opening the internal dampers 61 and 62 and closing the dampers 21a and 22a. In the gas-liquid contact cell unit 100, physical and chemical reactions and material and energy exchange phenomena caused by contact between liquid and air are exchange of sensible heat and latent heat, humidification and dehumidification, sterilization of bacteria, fungi, microorganisms, viruses, and suspended substances such as fine dust and radon. It can play a role in removing water-soluble pollutants such as CO ₂ air pollution and indoor pollution (VOC), and removing odorous substances.

In the case of the clean ventilation device 1 according to an embodiment of the present invention, air cleaning, sterilization, and humidity control are possible by passing through the gas-liquid contact cell unit 100 in any operation mode (summer season, winter season, inter-season, air cleaning) .

Meanwhile, FIG. 9 discloses a clean ventilation device 1 according to another embodiment of the present invention. As shown in FIG. 9, the clean ventilation device 1 includes an indoor exhaust unit 11, an outdoor exhaust unit 21, an indoor air supply unit 12, and an indoor exhaust unit 22, and the clean ventilation unit 1 ), the outlet air flow and the inlet air flow intersect in the total heat exchanger 41, and the gas-liquid contact cell unit 100 is disposed at the rear end of the intersection. The clean ventilation device 1 includes a liquid tank (not shown) disposed below each gas-liquid contact cell unit 100, and transfers the liquid stored in the liquid tank of one gas-liquid contact cell unit 100 to another gas-liquid contact cell unit 100. It also includes a pump 150 for supplying to the supply jacket of the. In the case of the clean ventilation device 1 of the present invention, a structure including a total heat exchanger 41 is possible as in the embodiment of FIG. 9, and it is also possible to place an additional filter (50 in FIG. 1) on the inlet side. .

In the above, the embodiment of the present invention has been mainly described, but the present invention is not limited thereto and may be modified and implemented.

For example, the liquid passage may further include a temperature control unit for controlling the temperature of the liquid, and if necessary, it is possible to indirectly control the temperature of the introduced air by heating or cooling the liquid, and the sensible heat exchange performance It is also possible to install a sensible heat exchanging heat pipe or a partition wall in order to increase the temperature, or, of course, to arrange a temperature control unit that directly heats/cools air in the air passage.

1: clean ventilation device 10: case
10a: inner wall 11: indoor exhaust
12: indoor air supply unit 21: outdoor exhaust unit
22: outdoor air supply unit 31, 32: fan
41: total heat exchanger 50: filter
61, 62: internal damper 71, 72: pressure sensor
100: gas-liquid contact cell unit 110: supply jacket
120: filter pad 130: gas-liquid contact structure
140: liquid tank 150: pump
151: flow sensor

Claims (10)

A clean ventilation device comprising an indoor air supply unit, an indoor exhaust unit, an outdoor air supply unit, an outdoor exhaust unit, and a fan disposed on an air flow path to the indoor air supply unit and the outdoor exhaust unit,
a first gas-liquid contact cell unit disposed on an air flow path flowing from the indoor exhaust unit to the outdoor exhaust unit;
a second gas-liquid contact cell unit disposed on an air flow path flowing from the outdoor air supply unit to the indoor air supply unit; and
Further comprising a liquid passage connecting the first gas-liquid contact cell part and the second gas-liquid contact cell part,
The first gas-liquid contact cell part and the second gas-liquid contact cell part include a liquid desiccant that contacts air passing therethrough;
The first gas-liquid contact cell unit includes a first supply jacket through which liquid is supplied; a first gas-liquid contact structure disposed on the air flow path and extending vertically so that the liquid is moved by at least the weight of the liquid; and a first liquid tank disposed under the first gas-liquid contact structure. Including,
The second gas-liquid contact cell unit includes a second gas-liquid contact structure disposed on the second supply jacket and the air flow path and extending vertically so that the liquid is moved by at least the weight of the liquid; and a second liquid tank disposed under the second gas-liquid contact structure. Including,
the liquid passage includes a first liquid passage connecting the first liquid tank and the second supply jacket, and a second liquid passage connecting the second liquid tank and the first supply jacket;
A first pump is disposed in the first liquid passage and a second pump is disposed in the second liquid passage,
Filter pads are disposed on lower surfaces of the first and second supply jackets, respectively, and the first and second gas-liquid contact structures are connected to the filter pad.
According to claim 1,
dampers disposed in the outdoor exhaust unit and the outdoor air supply unit; and an internal damper for controlling an internal air flow such that the air introduced into the indoor exhaust unit is discharged to the indoor air supply unit after passing through the first gas-liquid contact cell unit or the second gas-liquid contact cell unit. Clean ventilation system using the agent.
According to claim 1,
dampers disposed in the outdoor exhaust unit and the outdoor air supply unit;
a water level sensor disposed in at least one of the first and second liquid tanks; and
A water supply unit connected to at least one of the first and second liquid tanks;
The clean ventilation device using a liquid humidifier, further comprising a controller connected to the water supply unit, the water level sensor, the damper, the fan, and the first and second pumps.
According to claim 3,
The control unit controls the water supply unit so that lower portions of the first and second gas-liquid contact structures are submerged in the liquid desiccant stored in the first and second liquid tanks. .
According to claim 1,
The first and second gas-liquid contact structures have lengths extending to the inside of the first and second liquid tanks, respectively;
The first and second gas-liquid contact structures include micropores through which the liquid passing through the filter pad passes, and the filter pad and the first and second gas-liquid contact structures form the first and second gas-liquid contact structures by capillary action and membrane permeation. and a liquid film is formed on the surface of the second gas-liquid contact structure.
According to claim 1,
The liquid humidifier contains LiCl to sterilize or eliminate pathogens and viruses.
According to claim 1,
A clean ventilation device using a liquid humidifier, characterized in that a temperature control unit is disposed on the liquid tank or the liquid passage.
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